<%@ page contentType="text/html;charset=UTF-8" language="java" pageEncoding="UTF-8" %>
<%@ page isELIgnored="false" %>
<html>
<head>
    <title>Title</title>
</head>
<body>
<%--
    EL表达式语法：${EL表达式}
--%>

<h1>${3+2}</h1>

<%--字符串相加会报错--%>
<h1>${"Hello" + "JSP"}</h1>

</body>
</html>
